National September 11 Memorial Museum

May 14, 2014 |compiled from wire photos

The long awaited National September 11 Memorial Museum opened to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20.

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Artifacts from Ground Zero, including the cross made out of steel from the buildings, is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.

Spencer Platt/Getty Images

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Artifacts from Ground Zero, including the cross made out of steel from the buildings, is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City.